Dictating machine



2 Sheets-Sheet l ATTORNEYS* May 27 R936. J. E. RENHOLDT DGTA''ING MACHINE Original Filed 0G12. 50, 1951 ,mmm

.1. E. RNHOLDT Y DICTATING MACHINE original Filed oct. 5o, 1951 2 sheets-Sheng' TTOR N EYS Patented May 12, 1936 UNITED STATES DICTATIN G MACHINE John E. Renholdt, Bridgeport, Conn., assigner to Dictaphone Corporation, New York, N. Y., a corporation of New York Application october 30, 193i, serial No. 572,015 Renewed March'14, 1934 22 Claims. (ol. 274-47) This invention relates to dictating machines and with regard to certain more specic features, to a chip brush for the same.

Among the several objects ofthe invention may be noted the provision ofl simple and practical means for removing chips or the like from the surface of a record cylinder during operation of the machine; the provision of a brush of the naj ture described which automatically rotates whenever the machine is in operation; the provision of a brush of the nature described which is mounted for convenient and quick removal. Afurther object is to provide a readilyremovable chip pan for a dictating machine which is adapted simply and operatively to support a chip removing brush. A further object is to provide practical means for automatically rotating a chip brush of the nature described. A further object is to provide a brush f of the nature described operable locally upon the record in accordance with the operation of the recording stylus thereon. A still further object is to provide ra brush of the nature described which will be efcient in operation and may be easily A manufactured and readily installed on a dictating machine.

Other objects will be in part obvious and in part pointed out hereinafter; Y

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts as will be exemplified in the structure to be hereinafterdescribed and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings in which are shown two of the various possible embodiments of this invention:-

Fig. 1 is a front elevation of the upper portion of a dictating machine embodying my invention, certain parts being broken away, and certain other parts being indicated by broken lines;

Fig. 2 is a vertical section taken on line 2-2 of Fig. 1; V V V Fig. 3 is an end view of a chip pan embodying Y my invention and adapted to support a brush;

Fig. 4 is a vertical longitudinal section taken on line 4-4 of Fig. 3, and shows the brush of Fig. 3;

Fig. 5 is a view similar to Fig. 1, but showing certain modications therein;

Fig. 6 is a vertical section taken on line 6-6 of Fig. 5; and,

Fig. 7 is a top plan view of the chip pan and n u brush of Fig. 5K. Y

Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.

Referring now vto Fig. 1, there is showna top portion'or'plate I0 of a casing of a dictating machine. AnV integral left-hand standard I2 is formed on the plate I0 tol provide a suitable bear'- ing or support for a shaft I3, upon the outer end of which` there is mounted a mandrel or record support I 4, and upon the other end of which there is mounted a driving pulley I5, rotated by any suitable means (not shown). A clutch I6 is adapted to provide the driving connection between the pulley and the mandrel I 4. f Y An integral right-hand standard I I is also provided upongthe top plate, which, with the lefthand standard I2, provides a suitable support for an upper carriage rod I l, and a lower carriage rod I8. A sound box carriage I9 is adapted to be moved longitudinally of the record support vIII upon the carriage rods I1 and I8, either by manual operation, or by a suitable engagement with av drive screw 20, which is operated by a suitable gear train located within a housing 50 formed integrally with standard I2, said gear train being indicated by numeral 2|.

' The carriage I9 supports a sound box 22, on which are Vlocated recordingV and reproducing styli 23 and 24, respectively. 'I'he stylus 23 comprises for example ajewel, and when in recording position is adapted to cut a spiral groove in the surface of a record 9 mounted on the record support I4. The groove thus cut contains the record dictated. The record may be a wax or other known type of record. f

A control lever 25 is also mounted on the carriage I9, and is adapted to control the position ofthe sound box 22, namely, to move respectively the recording and reproducing styli onto the record, and toy move both Vstyli back into neutral position, as shown in Fig. 2.

YAn `extension `26 formed on the carriage I9 serves to receive a flexible, manually operable sound receiving and conveying tube, (not shown). The sound box 22 is connected with the extension 26 by'a continuous passage,

The carriage I9, sound box 22 and control 25, described in the above brief manner are more fully described in the following patents: Nos. 1,003,625; 1,093,732; 1,100,024.

n A further description ofthe sound box 22 and the carriage I9lis deemed unnecessary inasmuch as they constitute Yno part of the present invention.

rlhe operation of the machine is as follows: 'I'he operator places a record 9 upon the record support or mandrel I4, and moves the control lever 25 forwardly to place the jewel or recording stylus 23 in contact with the record surface 9. The clutch I8 is then closed by a manual control (not shown) whereupon the record support I4, and the record 9 revolve, and the carriage I9 moves forward under the influence of the drive screw 28, the recording stylus or jewel 23 cutting a spiral groove in the record surface.

This operation, as well as a description of the record per se is also disclosed in the above-mentioned patents, and will not be further described herein.

As the record 9 rotates, and the stylus 23 cuts a groove therein, fine thread-like chips of the Wax are cut out of the record, and usually these chips have been allowed to remain upon the surface of the record as it rotates with the mandrel. Such operation, however, is at times distinctly disadvantageous, inasmuch as such chips are likely to collect on and around the stylus 23 and may prevent its correct recording operation. Thus, if the chips collect around the recording stylus 23, they are likely to cause it to lift at times from the record, resulting in the formation of an irregular or discontinuous record groove. The wax chips collecting on the cylinder also interfere with the stylus 23 to cause it to jump and make irregularities which, when the record is reproduced, cause crackling and snapping noises. A further disadvantage of the chips is their tendency to accumulate on the cloth linings of cartons in which the records are stored. This deposit or accumulation tends to scratch the record thereby impairing its efliciency. The wax ychips left on the cylinder are also likely to be blown about to produce an'unsightly appearance about the dictation machine.

I have overcome these disadvantages by providing for the removal of the chips with a revolving brush 21. A revolving brush has been suggested heretofore for brushing the surface of a record, but the mounting of the brush, and its connection with the dictation machine was so cumbersome as to make its application to present standard dictating machines impractical. As clearly shown in Figs. 1 through 4, brush 21 which I have provided is mounted on a specially designed chip pan 28. The brush 21 comprises a brush shaft 29, to which are aflixed bristles 39 of camel hair or the like. At the left-hand end of the shaft, referring to Fig, 4, is provided a journal member 3| which has a slot 32 formed therein. Similarly, at the right-hand end of the shaft 29 is a right-hand end piece or journal member 33v which has a circumferential groove 34 Vformed therearound. The pan 28 has bearing openings 35 and 36 for receiving respectively the journal pieces 3| and 33. A latch 31 is pivotally mounted on the right-hand end of the chip pan 23, by means of a screw 3B, and is movable to a position where it engages the groove 34 to prevent longitudinal movement of the brush relative to the chip pan 28.

It is to be noted that the brush 21 is readily removable from its mounting in the chip pan 28 by lifting the latch 31 to disengage the groove 34, in which condition the shaft 29 may be moved to the right to remove the journal member 3| from the bearing 35. The brush may now be lifted and pulled to the left to release the journal member 33 from the bearing 3S, after which the brush may be removed bodily from the chippan.

The slot 32 in the end piece 3| is adapted to receive a reduced portion of driving stud shaft 39 which is located in the housing 5I) and is connected by a gear train G9 to the mandrel shaft I3. The gear train 40 is clearly shown in Figs. l and 2. Thus the driving stud shaft 39 rotates all the time the mandrel is rotating, and in the same direction in which the mandrel is rotating.

With the brush 21 as above described mounted in the chip pan 28, the chip pan is readily positioned on the plate I9, as shown in Figs. l and 2, in such a way that the end piece 3| receives the driving stud shaft 39 in the slot 32. This connection between the stud shaft and end piece 3| is such that the shaft is readily slidable within the slot 32.

Two pins 4I are provided in the casing plate |53 to cooperate with holes formed in the base o'f the pan 28, to prevent inadvertent movement of the pan 28 relative to the plate Il! after engagement between the stud shaft 39 and slot 32 has been eected. It is to be noted, however, that the pan 23 is readily removable from the plate I by simply lifting it clear of the pins I and sliding it to the right until it clears the record support where it may be removed bodily from the machine. This operation is more readily carried out when there is no record on the mandrel.

The operation of the brush 21 is readily discernible from Fig. 2, and from the above description. As the mandrel shaft I3 rotates the gear train III) operates to revolve the stud shaft 39, and consequently the shaft 29 to rotate the brush 21 in the same direction in which the record 9 is rotating. Thus the bristles 30 coming in contact with the surface of record 9, are moving in the opposite direction to which the record surface is moving. As a result, the chips or threads of wax formed by the jewel 23 are brushed down from the record 9 into the chip pan 28. The gear train 48 is preferably designed to rotate the brush 21 at a speed which is substantially equal to that of the rotational speed of the mandrel I3. However, this gear train 40 may be changed to produce other speeds if it is found desirable to do so.

A scraper or comb 42 placed along the length of the base of the pan 28, and extending up a distance sufcient to slightly engage the ends of the bristles 39 serves to remove any wax or chips from the bristles as the latter are moved past.

Some of the advantageous features of the invention are that a revolving brush is provided which operates continuously when the record 9 is rotated, which is readily removable from the dictating machine, and which is readily removable from its support, the chip pan, whereby a new brush may be substituted for an old one. other advantage is that simple and practical means is provided 'for removing the chips from the record surface.

Referring now to Figs. through '7, a modication of the brush 21 is shown. With the former embodiment, continuous brushing on that part of the record which has already been cut by the jewel 23 may wear and prove harmful to the record groove, for it is to be noted that the initial or An- V left-hand portion of the grooved record would be I' brushed continuously throughout the travel of the carriage I9 along the record 9.

The modification shown in Fig. 5 provides a brush 43 of a relatively narrow width, and which is slidably but not rotatably mounted on a groovecl shaft 44, which is in a manner similar to shaft 39 described above, mounted removably on a chip pan 28 and is held in place by a latch 31. Also, as in the previous form, a driving stud shaft 39, similar to the driving stud shaft 39 of Fig. 1 is adapted to assume a position in a groove 32 of the shaft 44, the groove 32 being similarto the groove 32 of the end piece 3l of Fig. 1.' The shaft 44 is rotated in the same ,way as .the shaft 29 of the Fig. l modiiicatin.

As before'pointed out, the brush 43 is slidably but not rotatably mounted relative to the shaft 44, and consequently as the shaft 44 rotates the brush 43 is also rotated. A grooved collar 45 is attached to the brush 43, and a finger or guide 46 mounted on the carriage Il] extends down and resiliently contacts with the groove in the grooved collar 45, so that as the carriage I9 vmoves relative to the record 9, the collar 45 and brush 43 follow the movement.

i The operation of the brush 43is as follows:

The record 9 is rotated afterthe control lever 25 has been moved to the recording position, and as the record is rotated and the jewel 23 cuts a groove inthe record the carriage I9 moves along the rods Il and I8, and the brush 43 moves with it and continuously brushes the portion of the record cylinder adjacent to and immediately behind the corresponding position of thestylus, effectually removing the chips therefrom. As before, a comb or scraper 42 is positioned along the longitudinal base of the chip pan 28, to remove the chips from the brush 43.

An advantage of this modification is that the brush 43 is in contact with any particular portion of the record surfaceifor a short time only, and consequently can not wear down the grooves formed therein.

As various embodiments might be made of this r .i invention, and as various changes might be made in theiconstructionA herein described, all without departingfrom the scope of thek invention, it is to beunderstood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

I claim: v

1. In a dictating machine, in combination, a record support, a pan removably mounted under said support, a rotatable brush removably mounted on 'said pan, and driving means adapted to drive said Abrush'when said pan is in position under said support, said driven brush being adapted to brush the surface of a record mounted on said'support.

2. In a dictating machine, in combination, a frame, a record support mounted on said frame, a removable chip pan vadapted to bepositioned on said frame under said support, a rotatable brush mounted on said pan, driving means adapted to drive said brush when said pan is in posisaid pan against accidental displacement.

' 3.In ay dictating machine, in combination, a frame, a record support mounted on said frame, a chip pan detachably supported in a fixed position on said frame under said support, a rotatable brush mounted on -said pan, driving means adapted to drive said brush when said pan is in position under said support, and means forming a slip connection between said driving means and said brush, said. pan being readily removable from saidY frame whereby saidbrush is also removed and disconnectedfrom said driving means.

4. In a dictating machine,in combination, a frame, a recordsupport mounted` on said frame, a chip pan detachably supported on said frame under said support, a rotatable brush detachably mounted on said pan, driving `means adapted to drivesaid brushwhen*- said panl is in position tion under'said support, and means for holding under'said support, and means forming a detachable connection between said driving means and said brush.'

5. In ,a dictating machine, in combination, a frame, a record support mounted on said frame, a chip pan adapted to be positioned on said frame under said support, means for` preventing lateral displacement of said pan while permitting removal thereof by lifting, a rotatable brush mounted on said pan and driving means associated with said record support for driving said brush when said support rotates and when said pan is in position under said support.

6. In a dictating machine, in combination, a frame, a recordsupport, a removable chip pan having bearing means formed therein and adapted to be positioned on said frame under said record support, means for holding said pan against accidental displacement, a brush mounted on said pan, driving means for said brush, said brush comprising a shaft, and means on either end of said shaft for supporting said shaft in said bearings, one of said means being adapted to make a detachable driving connection with said driving means.

7. In a dictating machine, in combination, a frame, a record support,l a chip pan having holes formed therein and adapted to be positioned on said frame under said record support, a brush for brushing a record on said support said brush beingmounted on said pan, driving means for said brush, said brush comprising a shaft, means on eitherv end of said shaft for supporting said shaft in said holes, one of said means being capable of making a driving connection with said driving means, and means associated with said pan and end means for locking said shaft from lateral movement with respect to said pan.

8. In a dictating machine, in combination, a frame, a rotatable record support, a chip pan adapted to be positioned on said frame under said record support, a brush mounted on said pan, drivingv means for said brush operable when said support is rotated, said brush comprisingra shaft, means on 'either end of said shaft forsupporting said shaft in bearing means in said pan, one of said means being adapted to make a driving connection with said driving means, and means associated with said pan and end means for locking said shaft'from longitudinalmovement with respect to said pan. y

9. In a dictating machine, in combination, a frame, a record support, .a chip pan having bearings formed therein and adapted to be positioned on saidframe undersaid record support, a brush extending the length of said record support 'comprising a'brush shaft rotatably mounted on said pan, a brush Vshaft driving-stud, means on said brush shaft for completing a driving-connection with said stud, and means associated with said frame and pan adapted to-lock said pan against inadvertent movement relative to said frame.

10. lIn a dictating machine, in combination, `a frame, arecord support, a chip pan adapted to be positioned on said frame under said record support, a brush extending the length of said record support comprising a brush shaft rotatably mounted on said pan, a latch on said pan for locking said shaft against longitudinal ,movement relative to said pan, said latch also being adapted to unlock said shaft whereby said shaft is removable from said pan, a brush shaft driving stud, means on said brush shaft for receiving said stud whereby said stud drives said shaft, and means associated witlrsaid frame and lpan'adapted to lock said pan'agai'nst inadvertent movement relative to said frame.

11. In a dictating machine, in combination, a frame, a record support, a brush shaft rotatably mounted with respect to said frame, a brush shaft driving stud, means on said brush shaft for receiving said stud whereby said stud drives said shaft, a brush mounted on said shaft and being adapted for slidable but not rotational movement with respect to said shaft, whereby said brush is rotated by said shaft tobrush the surface of a record on said support, and means for moving said brush along said shaft to operate upon said record throughout its entire length.

12. In a dictating machine, in combination, a frame, a record support mounted on said frame, a sound box carriage also mounted on said frame and movable laterally with respect to said record support, a brush shaft, means on said frame for rotatably supporting said shaft, means on said supporting means for locking said shaft against longitudinal movement relative to said supporting means, said means also being adapted to unlock said shaft whereby said shaft is removable from said supporting means, a brush slidably but not rotatably mounted on said shaft, a brush shaft driving stud, and means on said shaft for completing a driving connection with said stud, whereby said shaft and brush are driven, said brush being adapted to brush the surface of the record mounted on said support.

13. In a dictating machine, in combination, a frame, a record support mounted on said frame, a sound box carriage also mounted on said frame and movable longitudinally with respect to said record support, a brush shaft rotatably mounted with respect to said frame, a brush slidably but not rotatably mounted on said shaft, a brush shaft driving stud, means on said shaft for receiving said stud in driving relationship whereby said shaft and brush are driven, and means mounted on said sound box carriage adapted to move said brush along said shaft as said carriage moves along said record support.

14. In a dictating machine, in combination, a frame, a record support mounted on said frame, and a sound box carriage also mounted on said frame and movable longitudinally with respect to said record support, a chip pan adapted to be positioned on said frame under said record support, a brush shaft rotatably mounted on said pan, a brush slidably but not rotatably mounted on said shaft, a brush shaft driving stud, means on said shaft for completing a driving connection with said stud, and means mounted on said carriage adapted to slide said brush along said shaft as said carriage moves along said support.

15. In a dictating machine, in combination, a frame, a record support mounted on said frame and a sound box carriage also mounted on said frame and movable longitudinally with respect to said record support, a chip-pan adapted to be positioned on said frame under said record-support, a brush shaft rotatably mounted on said pan, a brush slidably but not rotatably mounted on said shaft, a brush shaft driving stud, means on said shaft for receiving said stud in driving relationship whereby said shaft and brush are driven, a grooved collar secured to said brush, a finger extending from said carriage and adapted to fit into said groove whereby said brush and said collar are moved on said shaft as said carriage moves along said support, and means associated with said pan and said frame adapted to inhibity inadvertent movement of said pan with respect to said frame.

16. In a dictating' machine, in combination, a frame, a record support, a chip pan adapted to be positioned on said frame under said record support, a brush extending the length of said record support comprising a brush shaft rotatably mounted on said pan, a brush shaft driving stud rotatable with said record support, means on said brush shaft for receiving said stud whereby said stud drives said shaft, and means associated with said frame and pan adapted to lock said pan against inadvertent movement relative to said frame.

17. In a dictating machine, in combination, a frame, a rotatable record support mounted on said frame, a carriage also mounted on said frame and movable longitudinally With respect to said record support, a shaft, a brush for brushing the surface of a record mounted on said support, said brush being slidably but not rotatably mounted on said shaft, driving means for rotating said shaft and brush, and means extending from said carriage for moving said brush along said shaft as said carriage moves along said support.

18. In a dictating machine, in combination, a frame, a rotatable record support mounted on said frame, a carriage also mounted on said frame and movable longitudinally with respect to said record support, a shaft, a brush for brushing the surface of a record mounted on said support, said brush being slidably but not rotatably mounted on said shaft, driving means for rotating said shaft and brush, said driving means being operable automatically when said record support is rotated, and means extending from said carriage for moving said brush along said; shaft as said carriage moves along said suppor 19. The combination with a dictating machine comprising a rotatable record-support, driving means therefor, a carriage movable along said record-support and provided with means to cut a sound groove in a record mounted on said support, of a rotatably mounted brush adapted to move with said carriage to remove cuttings from said record, and means operatively connected to said driving means independently of said record support for causing rotation of said brush.

20. In a dictating machine, in combination, a record-support, a chip-receiving pan mounted under said support, a rotatable brush mounted on said pan and adapted to remove chips from the surface of a record mounted on said recordsupport, driving means for rotating said brush, and means for removing chips from said brush as the latter rotates and causing the deposit of said chips within said pan.

21. In a dictating machine, in combination, a frame, a record-support, a brush shaft rotatably mountedwith respect to said frame, a brush shaft driving means, coupling means on said brush shaft for making a driving connection with said driving means, a brush mounted on said shaft and adapted for slidable but not rotational movement with respect to said shaft, whereby said brush is rotated by said shaft to brush the surface of a record on said support, and means for moving said brush along said shaft to operate upon said record throughout its entire length.

22. In a dictating machine, in combination, a frame, a record-.support mounted on said frame,

a sound-box carriage also mounted on said frame and movable longitudinally with respect to said record-support, a brush shaft rotatably mounted with respect to said frame, a brush sldably but not rotatably mounted on said shaft, a brush shaft driving means, means ony said shaft for making a driving connection with said driving means whereby said shaft and brush are driven, and means mounted on said sound-box carriage adapted to move said brush along said shaft as lsaid carriage moves along said record-support.

JOHN E. RENHOLDT. 

